this year's flu strain is a bit more virulent. it's more apt to cause serious disease, and so that's a nasty combination, a more virulent virus and seniors, of course, who are frail. so we are seeing complications, hospitalizations and some deaths in seniors. >> you have specific recommendations for elderly people if you start to feel sick and haven't had a flu shot right? >> absolutely norah. if you start to feel sick call your health care provider. they can prescribe an anti-viral, tamiflu is the most common and that can reduce the duration of the illness, make it milder, and you're much less apt to have the complications. >> for seniors and others how serious is this flu we're experiencing this winter? >> oh, it's serious but charlie, we have serious flu every winter. every senior indeed all of us should get our influenza vaccination each and every year.